Performance VX1 is a high end gentlemen’s enhancement system that consists of a motorized pump vacuum chamber, an airtight seal and a penis ring. Precision engineered vacuum chamber is clear for viewing progress measuring 2.5 inches wide, 11.5 inches in total length and accommodating 8 inches in penis length. The motorized pump provides penis enlarging suction and the pressure release valve allows comfortable removal. Bonus cock ring helps maintain erection and elongate each VX1 experience. Last but not least, we have included a detailed User Safety Manual. Acrylic Cylinder Is 8in.L x 2.5in.W. Overall Length Is 11.5in. High Capacity Pump Motor For Max Suction With A Push Of A Button Clearly Etched Measurement Markings Soft Pump Sleeve For Maximum Pleasure. 1 Cock Ring Included Detailed Product Instruction And User Safety Manual